Nut-lock.



PATENT ()FIOE.

UNITED STATES MATHEW OMALIA, OF SORANTON, PENNSYLVANIA, ASSIGNOR OF ONE-FIFTH TO JOHN F. DURKAN, ONE-FIFTH TO MARTIN B. CASEY, AND ONE-FIFTH TOA. J. CASEY AND P. J. CASEY, OOPARTNERS TRAD- lNG AS CASEY BROS, OFSORANTON, PENNSYLVANIA.

NUT-LOCK.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed September 13, 1905. Serial No. 278,258.

To all whom it may concern:

Be it known that I, MATHEW OMALIA, a citizen of the United States, and aresident of Scranton, in the county of Lackawanna and State ofPennsylvania, have invented a new and Improved Nut-Lock, of which thefollowing is a full, clear, and exact description.

This invention relates to nut-locks; and it consists, substantially, inthe details of construction and combinations of parts hereinafter moreparticularly described, and pointed out in the claims.

The invention is applicable to various urposes in the arts; and one ofthe principa objects thereof is to provide a nut-lock of an embodimentto overcome numerous disadvantages and objections encountered in the useof many other structures of the kind hitherto devised.

A further object is to provide a nut-lock which is simple inconstruction and comparatively inexpensive to manufacture, besides beingthoroughly effective and reliable for its purposes and possessing thecapacity for long and continued service.

The above and additional objects are'attained by means substantiallysuch as are illustrated in the accompanying drawings, in

. which similar characters of reference indicate corresponding parts inall the figures.

Figure *1 is a perspective view illustrating my improved nut-lock asemployed in connection with fish-plates disposed on opposite sides of arail-joint, the nut being shown as but partially screwed upon the boltto disclose the operative organization of the several elements of whichthe structure is composed. Fig. 2 is a transverse sectional view showingthe nut as screwed up in place on the bolt and locked. Fig. 3 is a viewin perspec-- tive of the main washer or ring-plate, showing theconstruction thereof more clearly; and Fig. 4 is a similar view of thesupplementary washer or ring late.

Before proceeding with a more detailed description it may be stated thatin the form of my improvements herein shown I employ a main Washer orring-plate of special construction adapted to be placed over the boltemployed and flatly against the surface of a portion of the structure tobe bolted, and in conjunction therewith I employ a specially-constructedsupplementary washer or ring-plate also adapted to be placed over thebolt employed. Said main washer or ring-plate is also so adapted to apart of the structure to be bolted as to be incapable of turning aboutthe bolt in either direction, while the two said washers or ring-platesare so adapted to each other as to effectually resist any tendency toreverse turning of the nut on the bolt,

as will presently be explained.

Reference being had to the drawings by the designating charactersthereon, 1 represents a portion of an ordinary railway-rail on oppositesides of which are located fishlates 2, the former having through theweb. t ereof an opening 3 and the latter each having through thevertical member 4 thereof a similar opening 5, all the said openingscoincidin with each other and receiving therethrough a fastening-bolt 6for the fish-plates, said bolt havin a threaded portion 7 from one endthereo as shown, and being provided at its other end with a head 8.Fitting upon the said bolt and against the outer side of the verticalmember 4 of the fish-plate adjacent to said threaded portion 7 of thebolt is the inner flat face 9 of a main washer or ring-plate 10, (seeFig. 3,) having a central opening 11, through which the bolt extends andprovided on its outer face With reversely-disposed inclined planes 12,bearing such relation to the bolt as to produce shoulders 13, disposedon opposite sides of both a vertical plane and a horizontal planepassing through the axis of the bolt. The said main washer or ring-plate10 is formed with a lower straight edge 14 and lateral toes orextensions 15, so that a rest is provided therefor upon the fish-plate,and the same is thereby prevented from turning about the bolt in .eitherdirection, as will be apparent. Also fitting upon the bolt is asupplemen tary washer or ring-plate 16, (see Fig. 4,) the same having acentral opening 17, through which the bolt extends and being formed atits outer edge with diametricallydisposed projections or lugs 18, asshown. This washer or ring plate is split or cut through at 19, thus toprovide an upper ter minal member 20 and a lower terminal member 21, theformer of which is bent or sprung outwardly on a practically spiralcurve and is formed with a chisel edge 22, adapted to bite or take intothe material of the inner surface of the nut 23 whenever there is anytendency of the latter to loosen or turn in a re verse direction on thethreaded portion of the bolt on which it is screwed.

In the use of my improved nut-lock the main washer or ring-plate isfirst placed in proper position with reference to the bolt and thestructure to be bolted,'a fter which the supplementary washer orring-plate is applied with the said chisel edge thereof disposedoutwardly and with one of the lugs or projections 18 thereof inengagement with one shoulder 13 on one side of the'axis of the bolt andthe other of said projections or lugs Should, however, the force orstrain be great enough to overcome the resistance thus offered, theninasmuch as on any reverse turning of the nut the supplementary washeror ring-plate must turn therewith it follows that the projections orlugs 18 of the supplemen tary washer or ring-plateare caused to rideupon the hereinbefore-mentioned inclined planes 12 of the main washer orring-plate, thereby absolutely preventing back turning of the nut, aswill be apparent, no slack of the nut resulting whatever but what istaken up or compensated for in the manner hereinbefore set forth.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A nut-lock comprising a bolt, a main washer thereonadapted for contact with a part of the structure to be bolted, andhaving means for preventing the same from turning about the bolt ineither direction, a supplementary washer also on the bolt, and a nut,the two said washers having reverse engagement with each other onopposite sides of both a vertical plane and a horizontal plane passingthrough the axis of the bolt, and said supplementary washer having aspring member formed with a chisel edge for engaging with the nut.

about the bolt in either direction, a split supplementary washer also onthe bolt, and a nut, the two said washers having reverse engagement witheach other on opposite sides of both a vertical plane and a horizontalplane passing through the axis of the-bolt, and said supplementarywasher having a terminal thereof "sprung outwardly and formed with achisel edge for engaging with the nut on reverse turning thereof.

4. A nut-lock comprising a bolt, a main washer thereon adapted forcontact with a part of the structure to be bolted, and having a straightlower'edge and lateral extensions for preventing the same fromturningabout the bolt in either direction, a split supplementary washer also onthe bolt, and a nut,

the two said washers having reverse engage ment with each other onopposite sides of both a vertical plane and a horizontal plane passingthrough the axis of'the bolt and said supplementary washer having aterminal thereof sprung outwardly and formed with a chisel edge forengaging with the nut on reverse turning of the latter.

5. A nut-lock comprising a bolt, a main washer thereon adapted forcontact'with a part of the structure to be bolted, and having means forpreventing the same from turning about the bolt in either direction, asplit sup plementary washer also on the bolt, and a nut, the said mainwasher having reverselydisposed inclined planes on its outer face,forming shoulders located on opposite sides of both a vertical plane anda horizontal plane'passing'through the axis of the bolt, and saidsupplementary washer having diametrically disposed projections engagingwith said shoulders, and also having means for engaging with the nut onreverse turning of the latter.

6. A nut-lock comprising a bolt, a main washer thereon adapted forcontact with a part of the structure to be bolted, and having means forpreventing the same from turning about the bolt in either direction, asplit supplementary washer also on the bolt, and a nut, the said mainwasher having reversely disposed inclined planes on its outer face,forming shoulders located on opposite sides of both a Vertical plane anda horizontal name to this specification in the presence of plzglepdassing1 through the aflxishof the bolt, two subscribing witnesses. ansai su p ementar Was er avin a terminal there bf sprung iltwardly andormed MATHEW OMALIA' 5 With a chisel edge for en aging With the nuWitnesses:

on reverse turning of the atter. I CHAS. E. DANIELS, In testimonywhereof I have signed my NELLIE DUFFY.

